Digital Commons Network^™

Synthesis, Bio-Evaluation And Quantum Chemical Studies Of Some Coumarin Derivatives, Samar M. Shakir, Yasameen K. Al-Majedy

Journal of Applied Sciences and Nanotechnology

Coumarins are oxygen heterocyclic compounds that exist naturally and have a wide range of pharmacological properties, making them ideal as lead compounds for developing more powerful analogs. The modification of 4-methyl, 7-hydroxycoumarin by different reaction steps was done in this study to yield target compounds. They were characterized by different spectroscopic techniques (FT-IR and NMR), melting point and a thin layer chromatography. The microbiological activity of these compounds was investigated in a variety of bacterial and fungal species. Since the newly synthesized derivatives contain a variety of functional groups and may be microbiologically active, so the microbiological function of these …

A Comparative Study Of Fluticasone Alone And Fluticasone With Azelastine Nasal Spray In Patients With Allergic Rhinitis, Fidelis G. Dass A, Sahana G N, Nalini Gk, Ragavendra Prasad Ku

Pharmacology and Clinical Pharmacy Research

In India, 20-30% of the population suffers from allergic rhinitis. Its prevalence increasing over the past many years and often adversely affects the quality of life. Little importance is given to allergic rhinitis and patients fail to correlate the ill-health to symptoms of allergic rhinitis in India. Studies have shown that patients with allergic rhinitis adversely affect the behavior, work performance, and lifestyle of patients. Hence this study was undertaken to compare the efficacy of fluticasone alone and in combination with azelastine. A total of 60 patients were randomly assigned into two groups (30 patients each), where the first group …

Treatment Pattern Of Antiepileptic Drugs In Pediatric With Epilepsy, Dwajani S, Meghana Ks, Krithika S, Adarsh E

Pharmacology and Clinical Pharmacy Research

Studying drug utilization helps to develop twin concepts for therapeutic formulation and essential drug lists. The main preference of using Antiepileptic drug (AED) therapy is that patients can be seizure-free for their lifetime. Treating children with epilepsy remains a major challenge, despite having several AEDs. Hence, we aimed to study drug utilization patterns among pediatric patients with epilepsy. This prospective study was conducted on 150 patients lesser than 18 years of age, receiving antiepileptic drugs. A specially designed case record form was used to collect the data on socioeconomic status, disease data, and treatment details. The majority of the children …

A Comparative Study Of Tolerability Of Losartan Versus Atenolol In Essential Hypertension And Their Effect On Lipid Profile, Amrutha Torvi, Prashanth D, Soujanya S, Lingraj Patil

Pharmacology and Clinical Pharmacy Research

Hypertension is a vascular disease entity that is a common problem occurring worldwide, characterized by sustained elevated blood pressure. Losartan and atenolol are two medications that are commonly used in hypertensive patients. However, the mechanism of tolerability their effect on lipid profile is not clearly described. Thus, the aims of this study were to study the tolerability of losartan with atenolol in patients with hypertension and the changes in lipid profile on treatment. This research was a prospective, open-label, parallel-group, comparative study conducted in the medicine out-patient department (OPD), where 100 patients aged 40-60 years with newly diagnosed mild and …

Initial Effects Of Deforestation On Herbaceous Species Composition In Grassy Woodlands Of The Northern Tablelands, Nsw Australia, Chris R. Chilcott, N. Reid, R. D. B. Whalley

IGC Proceedings (1977-2023)

Limited information on the initial effects of clearing and thinning on herbaceous vegetation of grassy temperate eucalyptus forests exists. The aim of this investigation is to study the initial changes in species composition following clearing and thinning. A deforestation experiment was established where clearing, thinning of 50% of canopy cover and control treatments were established. In the open-forests, patterns in herbaceous species composition were strongly influenced by the presence of trees, with weeping wheat grass (Microlaena stipoides) dominant, whereas wiregrass (Aristida ramosa) dominated interspaces and canopy gaps. Immediately following clearing, significant changes in the herbaceous species …

The Influence Of Large Animal Diversity In Grazed Ecosystems, M. G. Murray, D. R. Baird

IGC Proceedings (1977-2023)

Field observations in the Serengeti National Park, Tanzania have revealed several modes of grazing system, including migration, sustained-yield grazing and grazing succession which contribute on the one hand to ecological separation of herbivores by habitat choice, but on the other hand to positive association of species on wet season pastures known as hot spots. Drawing from results of experimental field studies, we consider what is known about resource competition and facilitation, the two key ecological processes underlying these grazing systems, and specify the shape of the relationship between species richness and pasture height that is predicted depending on which process …

Vegetation Changes In Southeast Australian Temperate Grasslands, D. L. Garden, T. P. Bolger

IGC Proceedings (1977-2023)

In temperate areas of southeast Australia, the combined effects of tree clearing, grazing, application of fertilizer and the introduction of exotic species have modified the original grasslands. This paper describes these changes and attempts to explain them in terms of ecological principles derived from North American grasslands. Stability of the original grasslands appears to have been due to the lack of disturbance and the slow rates of nitrogen (N) cycling within them. Increased N cycling after disturbance has allowed invasion of species better adapted to higher N status, particularly exotic annual grasses and weeds. The present composition of grasslands, in …

Caffeinated Gum Does Not Influence Rpe-Regulated Cadence In Recreationally-Active, College Females Regardless Of Habitual Caffeine Consumption, Maria L. Mask, Bandar A. Alghamdi, Lauren G. Killen, James M. Green, Eric K. O'Neal, Hunter S. Waldman

International Journal of Exercise Science

International Journal of Exercise Science 14(2): 1375-1387, 2021. Caffeine (CAF) has been extensively studied for its ergogenic and analgesic effects during exercise. However, the majority of these studies have been conducted in male populations. This study investigated the effects of acute CAF chewing gum on self-selected exercise intensity during a rating of perceived exertion (RPE) production trial in active females (n = 16, 21.0 ± 2.8 y). Data were also analyzed based on habitual CAF consumption level. Participants completed a V̇O_2peak trial, followed by a familiarization and two randomized, triple-blinded experimental RPE production trials on an arm ergometer …

The Effects Of Grazing Management And Fertilization On Grassland Diversity And Productivity, Warren Mcg. King, David R. Kemp

IGC Proceedings (1977-2023)

The effects of management practices on plant species diversity and productivity within a naturalised grassland was studied as part of a large-scale experiment designed to investigate issues of sustainability in temperate Australia. Fertiliser increased the production but reduced the diversity of the sward. The main decline was in exotic weed species. Strategic grazing resulted in a small increase in pasture diversity but a reduction in productivity. There was a consistent decline in diversity as productivity increased, across all treatments.

Soil Biodiversity, Root Herbivory And Carbon And Nitrogen Cycling In Grassland Soils, R. Cook, L. A. Dawson, A. C. Gange, S. J. Grayston, P. J. Murray, A. M. Treonis

IGC Proceedings (1977-2023)

This paper describes research on the relationships between grassland management practices and the diversity of biological communities in soil. Observations are being made in field trials with applications of nitrogen and lime and of insecticide to an original diverse sward and to a single species grass re-seed. The treatments are designed to produce different degrees of diversity in communities of soil animals and microbes. Assessments are being made over three years of the effects on the populations, activity and diversity of root-feeding animals, arbuscular mycorrhizal fungi, soil bacteria, fungi and micro fauna, including nonplant feeding nematodes. Associated laboratory experiments assess …

Theoretical Approach To Diplomatic Rhetoric, Oqila Bayjanova

Philology Matters

Speech culture is a branch of linguistics, and later, as a result of further researches, another new term, rhetoric, entered the field of linguistics. The culture of rhetoric is a science that goes hand in hand with the field of public speaking, which is primarily focused on the formation of a person's abilities and talents. While rhetoric is the science that studies the talents of the speaker, the culture of speech is the science that studies the literary language and its norms. Rhetoric is a complex art that requires persistence, patience, skill and experience. Real speech requires great skills and …

The Role Of The Principle Of Historism In Ethnogenetic Investigations, Akram Kuldashev

Philology Matters

This article deals with the relationship between the ancient Germanic and ancient Turkic tribes, that is illustrated in historical sources. Interaction between peoples requires contacts between their languages. The events mentioned in the article took place in Europe in the II-IX centuries AD. The historical process, known as the Great Migration of Nations, changed the ethnic and, of course, the linguistic map of Europe.
Scandinavian sources claim that most of the central and North Germanic peoples migrated from Eastern Europe and Asia in the 5th -10th centuries AD.
The process of the great migration of peoples is one of the …

Teaching English To Medical Students: Current Trends And Perspectives, Dilafruz Buranova

Philology Matters

The teaching of special subjects in English in non-linguistic universities is currently being widely introduced into the higher educational system. The main requirements for the modern image of today's personnel, the peculiarities of teaching English as well as the essence of the strategy for the acquisition of foreign languages are coming up on the agenda. Accordingly, the issues of the introduction of effective methodologies for achieving quality and respectable results in the organization of activities in this regard, the efficient use of modern teaching methods – all this is very important and leads to huge achievements. The given investigation examines …

The Role And Methodology Of Project-Based Learning In Teaching The English Language, Nilufar Karimova

Philology Matters

The article deals with the theoretical basis and methodological aspects of implementing Project- Based Learning in foreign language teaching. Although the roots of Project-Based Learning ideas go back to the beginning of the 19th century, the growth of researches in this area has reached its peak with the advent of the 21st century. Project- Based Learning is a systematic process that enables students to achieve learning objectives that are focused on the content of education through working on a specific project that covers real-life problems and challenges. It is impossible to ignore the fact that projects form the basis of …

Typology And Structural Features Of Radio Shows, Klimentina Ismailova

Philology Matters

The article considers a Show as a widespread form of radio broadcasting and investigates its structure and main typological features. The specificity of radio shows is revealed through the prism of comparative analysis with television talk shows, determined with peculiarity of their perception by recipients. The factors that prove the popularity of a very broadcasting phenomenon are identified. A classification of radio shows is given according to the ratio of program elements, the time criterion, the composition of the presenters, etc. Weekend radio shows and specialized shows are also characterized. The key components of a Show and its stylistic features …

The Role Of Competent Approach To Teaching Foreign Languages To Journalism Students, Zukhra Khazratova

Philology Matters

The introductory part of the article presents historical facts about the field of journalism and how and when its primary education was formed. Also, the scientific significance of the research results in the field of journalism is explained by the usefulness of the proposed system, methodology, evaluation criteria to improve the content and methodological basis of journalism in higher education, and researches on teaching journalism terms.
Practical significance of the research results, the developed proposals and practical recommendations provide theoretical insights on the formation and development of lexical competence in media terms, improvement of curricula in students majoring in journalism …

Sociopragmatic Principles Of Students’ Linguistic Communication: Concepts And Rules, Mastona Gozieva

Philology Matters

The purpose of this article is to study the socio-pragmatic principles of linguistic communication of students. In recent years, as a result of developments in various spheres of society, the demand for foreign languages is growing. In today's era of globalization, we all know that the main demand of the labor market in the advanced countries of the world is the ability to communicate in a foreign language, knowledge of computer technology and rich innovative ideas and their own style. Measures to further improve the system of study of foreign languages were highlighted in the Law on Education, the National …

Environmental Impacts Of Seawater Desalination On The Marine Environment In The Kingdom Of Bahrain, Waleed Al-Zubari, Alaa Elsadek, Mohamed Khadim

Emirates Journal for Engineering Research

The main water planning and management challenge facing Bahrain is in how to balance water availability and water use on a long-term basis in the face of increasing demands under the least economic and environmental costs and without endangering socio-economic development. To meet escalating municipal water demands desalination is becoming inevitable, which is associated with substantial financial, economic, and environmental costs. In this research, the environmental impact of seawater desalination on the surrounding marine environment is assessed at a government-owned MSF desalination plant (Sitra Power and Water Station (SPWS)). The assessment used a number of environmental indicators, namely temperature and …

A Proper Framework For Studying Noise From Jets With Non-Compact Sources, Woutijn J. Baars, Nathan E. Murray, Charles E. Tinney

Faculty and Student Publications

A quantitative assessment of the acoustic source field produced by a laboratory-scale heated jet with a gas dynamic Mach number of 1.55 and an acoustic Mach number of 2.41 is performed using arrays of microphones that are traversed across the axial and radial plane of the jet's acoustic field. The nozzle contour comprises a method of characteristics shape so that shock-related noise is minimal and the dominant sound production mechanism is from Mach waves. The spatial topography of the overall sound pressure level is shown to be dominated by a distinct lobe residing on the principal acoustic emission path, which …

Saxs-Based Nano-Scale Pore Structure Characteristics Of Coals With Different Metamorphic Degrees, Zhang Yu, Li Yong, Wang Yanbin, Wang Zhuangsen, Zhao Shihu, Han Wenlong

Coal Geology & Exploration

In order to reveal the characteristics of nano-scale pores in coals with different metamorphic degrees, the small-angle X-ray scattering method (SAXS) is used to obtain the porosity, pore size distribution, specific surface area and fractal dimension of 15 samples whose vitrinite reflectance R_max is 0.31%-6.24%, and the low temperature CO₂ and N₂ adsorption DFT model results are used to verify the pore size distribution. The results show: during coalification process, when R_max is < 0.5%, the porosity and the specific surface area of coal increase with the increase of metamorphic degree, the micropores(< 2 nm) content increases seldomly, the mesoporous(2-50 nm) and microporous(50-100 nm) content increase greatly, and the surface of coal is gradually smooth. When R_max=0.5%-1.4%, the porosity and the specific surface area decrease, and each type of pore content is reduced, and the surface of …

Cbm Well Drainage Data-Based Dynamic Inversion Study Of Reservoir Gas Content, Ma Dongmin, Ji Yusong, Chen Yue, Zheng Chao, Teng Jinxiang, Ma Zhuoyuan, Xiao Jialong

Coal Geology & Exploration

The gas content of coal reservoir is the core parameter of coalbed methane production. There is an error between the measured gas content and the real gas content of coal reservoir. In this paper, based on the gas production of Haishiwan coalbed methane wells in different periods and the decrease of the "constant volume" of the gas content of coal reservoirs, the real-time gas content of coal reservoirs is inverted, and the change rule of the real-time gas content in the process of coalbed methane well drainage is explored. The results show that: (1) The gas content of coal reservoir …

3d Seismic Physical Modeling Acquisition Technology And Its Application, Liu Qiang, Shi Xianxin, Hu Jiwu, Dong Ruijing, Lian Chenguang

Coal Geology & Exploration

Seismic physical modeling acts as a bridge between the research on seismic theoretical methods and actual seismic exploration, which is an important means of studying the propagation law of the elastic wave field and verifying the processing and interpretation methods. It plays an important role of theoretical supporting in the field of oil & gas seismic exploration. There is a great difference between coalfield and oil & gas in seismic exploration attributes, and no professional automatic seismic physical modeling system has been built in the field of coal field seismic exploration. Therefore, a large professional 3D seismic physical modeling system …

Prevention And Control Technology Of Goaf Water Hazard In Unauthorized Mining Areas Of Extremely Soft And Medium-Thick Coal Seams, Li Zhi, Zheng Shitian, Shi Zhiyuan, Wang Yuhang

Coal Geology & Exploration

Unauthorized mining in coal pit is common in China's coal industry. As the scope of unauthorized mining and the amount of accumulated water are hard to determine, the goaf water seriously threatens the safety of mining in adjacent large coal mines. In order to explore the unauthorized boundary of coalpits quickly and accurately and prevent the threat of goaf water, the long distance drilling technology of ground bedding borehole in medium and thick coal seam is proposed based on the controllable trajectory and accurate positioning of ground directional drilling, which mainly includes precise drilling in extremely soft and medium-thick coal …

Research On The Coal Thickness Prediction Method Based On Vmd And Svm, Zeng Aiping, Zhang Jiawei, Ren Enming, Liu Tao, Jiang Fei, Liu Xingjin, Su Huairui

Coal Geology & Exploration

Changes in coal thickness have an important impact on safe and efficient coal mining. In order to solve the problem of large errors in coal thickness prediction results when the 3D seismic data contains noise, a method in which variable modal decomposition(VMD) and support vector machine(SVM) methods are combined for coal thickness prediction is proposed. Firstly, a coal-thickness wedge model is constructed and seismic forward modeling is performed on it. Based on the condition of thin coal seam thickness, the amplitude attribute and bandwidth attribute have a good positive correlation with the coal thickness, while the instantaneous frequency attribute has …

Research And Application Of The Prediction Method For Cbm Enrichment Area Of Low Rank Coal, Luo Zhongqin, Liu Peng, Meng Fanbin Research Institute Of Coal Geophysical Exploration, China National Administration Of Coal Geology, Zhuozhou 072750, China

Coal Geology & Exploration

The exploration of low rank coal coalbed methane(CBM) faces the problems of low resource exploration rate and low single well production. And medium and low rank coal CBM exploration is still in the primary stage. In order to improve the predition accuracy of the low rank coal CBM enrichment area, the laboratory test data of 652 coal samples from 56 wells in Hancheng, Jincheng Baode, Ji'ergalangtu Qinshui Basin, Huainan, Huaibei and other places were collected to compare the relationship between gas content and elastic parameters of high, medium and low rank coal samples. The results indicated that the correlation between …

Characteristics Of The Shale Gas Reservoirs And Evaluation Of Sweet Spots In Wufeng Formation And Longmaxi Formation In Jingmen Exploration Area, Li Xiaoming, Liu Jirong, Lin Wen, Ma Lihong, Liu Dexun, Chen Yujie

Coal Geology & Exploration

In order to further clarify the resource potential of shale gas from Wufeng Formation to Longmaxi Formation in Jingmen exploration area, sweet spots were selected. The shale in Wufeng Formation and 1th Member of Longmaxi Formation of the well X was taken as the research object in this study. Using sliced kerogen, X-ray diffraction, nuclear magnetic resonance, micro nano CT scanning, geochemical analysis and other testing methods, combined with logging interpretation results, based on the petrology, organic geochemical and mineral composition, physical properties, pore types and structure characteristics and hydrocarbon content, the reservoir characteristics of Wufeng-1^th Member of the …

Analysis Of Organic Matter Maturity Of Sapropel Coal In Oil Layer A Of Haishiwan Mine Field Of Yaojie Mining Area, Song Xiaozhong, Zhang Bingzhong, Lei Ying, Song Yanqiang

Coal Geology & Exploration

The vitrinite reflectance is recognized as the only comparable evaluation index of organic matter maturity of source rock in the exploration and development of oil and gas, shale gas and coalbed methane resources. Current research was done to determine the organic matter maturity of sapropel coal in oil layer A in Haishiwan mine field more accurately. Coal samples were collected from boreholes and observation of the optical characteristics of reflected light and fluorescence microscopic components were studied under the microscope. It was found that there are two different characteristic vitrinites in sapropel coal in oil layer A. One was fluorescent …

Intraoperative Acoustics: Auditory Cues In Hip Reconstructive Surgery, Jeffrey M. Henstenburg, Walaa Abdelfadeel, Anthony J. Boniello, Joseph Schmitz, Jeffrey J. Vakil, Andrew M. Star

Rothman Institute Papers

Background: Orthopaedic surgeons rely on visual and tactile cues to guide performance in the operating room (OR). However, there is very little data on how sound changes during orthopaedic procedures and how surgeons incorporate audio feedback to guide performance. This study attempts to define meaningful
changes in sound during vital aspects of total hip arthroplasty (THA) within the spectrum of human hearing.

Methods: 84 audio recordings were obtained during primary elective THA procedures during sawing of the femoral neck, reaming of the acetabulum, acetabular cup impaction, polyethylene liner impaction, femoral broaching, planning of the femoral calcar and press-fit of a …

Uncertainty Of The Ultrasonic Method For Determining The Strength Of Concrete, Ortagoli Sharipovich Hakimov, Zamira Khudoyberdiyevna Ernazarova

Chemical Technology, Control and Management

The issues of measuring the strength of concrete by the method of surface sounding by ultrasound are considered. A measurement model and formulas for estimating the total standard measurement uncertainty, information about the standards used, measurement tools and methods, and environmental parameters are given. Information about the estimation of uncertainty in the form of "eight steps", such as: measurement task; mathematical model of measurement; analysis of input values; observation results; correlations; uncertainty budget; expanded uncertainty; measurement result. It has been established that the uncertainty of type B of the ultrasonic method for determining the strength of concrete is much less …

Mathematical Modeling Of Processes Of Diagnostics Of Technical And Technological Objects, Azizbek Nodirbekovich Yusupbekov, Khurshid Salim Ugli Turayev

Chemical Technology, Control and Management

The work is an introduction to the technical diagnostics of technical (or technological) objects. It discloses the basic concepts and definitions of the reliability of dynamic systems as objects of diagnostic reference knowledge and their diagnosis. Structural schemes of diagnosing objects with individual and combined channels of influence are analyzed. Questions of rational construction of base of reference knowledge are stated.